Rivetless hoop joint



Patented Oct. 13, 1936 PATENTOFFICE RIVETLESS noor Jom'r HarryC.Brainard, Detroit, Mich.

Application September 10, 1935, Serial No. 39,960 i.

4 Claims.

This invention relates to an improvement in joints for the hoops andreinforcing means of barrels and the like, and more particularly to arivetless hoop joint and the method of making the same.

The main object of the invention is to provide a rivetless hoop jointthat is cheap to manufacture, that is strong, that will not cut thehands of workmen who handle containers provided with reinforcing hoopsand bands so joined together. Another object of the invention is toprovide a method of making a rivetless hoop joint.

These and other objects and features of the invention will be understoodfrom the following description taken with the accompanying drawing,wherein;

Fig. 1 shows a perspective view of a butter tub provided with hoopshaving joints embodying the present invention;

Fig. 2 is an enlarged vertical view of one end portion of a hoop as itappears preparatory to being joined to another end;

Fig. 3 is an enlarged vertical view showing the complementary endportion of a hoop preparatory to being joined to the end portion shownin Fig. 2;

Fig. 4 is an enlarged vertical view of two ends of a hoop as joinedtogether by my invention;

Fig. 5 is a sectional view taken on line 5-5 of Fig. 2; and

Fig. 6 is a sectional view taken on line 6-6 of Fig. 4.

In the art of making butter tubs, barrels and the like, a reinforcingband or hoop which may or may not be corrugated, but which is eitherprovided with an annular flange or an annular bead along its lower edgeshas become well known and is in common use. Of course, the flange orbead may be provided on the upper edge. My invention applies to thisbeaded or flanged type of hoop.

In Fig. 1 of the drawing, I have shown a butter tub lll, provided with aseries of beaded hoops H, for securing the barrel stays l2, in the usualmanner. The ends of the hoops are shown as joined together with myrivetless hoop joint.

The band portion 13, of each hoop is provided with an annular bead l4,along its lower edges in the customary manner, although any type offlange may be used in lieu thereof.

My invention consists in providing a means for uniting the ends of suchhoops without the use of rivets, screws, bolts or the like.

Near the end of each beaded or flanged hoop, I cut away one or moreportions of the bead, or of the flange, as the case may be. Forinstance, in the case of the bead shown, I prefer to cut away twoportions thereof at each end, the cutaway portions or seats beingdesignated by the numerals [5,16, I1, and i8, thus leaving one or moreprojecting portions on each hoop, such as those designated by thenumerals I9, 20, 2|, and 22. These portions are cut in such manner thatthe cutaway portion or seat I5 of one bead will receive projectingportion 2| of the other bead and cutaway portion or seat ll of thelatter will receive projecting portion IQ of the former. Similarlycutaway seat portion ill of the one bead will receive projecting portion20 of the other and cutaway or seat portion l6 of the latter willreceive projecting portion 22 of the former when the ends are placed oneover the other in joining them.

In the preferred embodiment of my invention, I provide a locking meansas hereafter described. On one end of the hoop ll, above the cutawayportion or portions of the bead I4, I cut out a portion of the band 13,making a recess 23 in the top thereof.

The end of the hoop that has the recess 23, is then placed over theother end of the hoop and the respective projections and cutawayportions of the bead are interfitted.

I then perform a forming operation that bends the portion of the hoopthat is underneath the recessed portion over the latter, as shown inFig. 4, designated by numeral 24. This not only prevents the projectingportions of the bead from coming out of alignment with each other, butalso serves to aid the interlocking beads in preventing telescopicmovement of the respective ends of the hoop.

It is headily seen that the projecting portions of the beads act as lugswhich engage complementary projecting bead portions or lugs whichprevent separation of the hoop ends so long as the bead portions engageeach other. It is also seen that the portion 24 of the band that is bentover the recessed portion 23 holds the bead portions inalignment andforms abutment shoulders 25 and 26, which respectively engage theshoulders 23a and 23b ofthe recess 23; said portion 24 and saidshoulders 25 and 26 thus aid in preventing longitudinal movement of onehoop end with respect to the other.

This locking means may also be accomplished in other ways. For instance,it is not necesinterposed projecting portions are provided near each endfor seating into the seats adjacent each opposite end of the band whenthe ends of the band are overlapped.

2. In a rivetless hoop the combination of a metal hoop band, a flangeprojecting laterally from one edge of said band, spaced seats in saidflange adjacent both ends of the band providing interposed projectingportions near each end of the band for seating into the seats adjacenteach opposite end of the band when the ends of the band are overlapped,and means for keeping said projecting portions interlocked in theirrespective seats.

3. In a rivetless hoop the combination of a metal hoop band, a laterallyprojecting bead formed by curling up one edge of the band, spaced outout portions in said bead to provide spaced seats and interposed seatfitting projections adjacent both ends of the band for mutualinterlocking engagement when the ends of the band are, overlapped.

4.111 a rivetless hoop the combination of a metal hoop .band, alaterally projecting bead formed by curling up one edge of the band,

spaced out out, portions in said bead to provide spaced seats andinterposed seat fitting projections adjacent both ends of the band formutual interlocking engagement when the ends of the band are overlappedand a recess in the other edge of said band opposite said bead forreceiving a bent over portion of the overlapped end of the band to keepthe interlocking bead portions interlocked and to aid them in preventingtelescopic movement of the respective ends of the hoop band.

HARRY C. BRAINARD.

